EP 0143852 B1 19900919 - ABSOLUTE POSITION DETECTING SYSTEM FOR A SERVO CONTROL SYSTEM
Title (en)
ABSOLUTE POSITION DETECTING SYSTEM FOR A SERVO CONTROL SYSTEM
Publication
Application
Priority
JP 6333383 A 19830411
Abstract (en)
[origin: JPS59188518A] PURPOSE:To use detecting circuits in common and to take a high-precision measurement of the absolute position of every shaft by switching and outputting outputs of an absolute encoder and a resolver which couple with servomotor shafts of respective operation shafts in a prescribed rotational speed ratio through a switch. CONSTITUTION:Each of servomotors AXa, AXb... for respective operation shafts are provided with an absolute encoder 110 and a resolver 202 which rotate as interlocked with a servomotor 105 in m:1 rotational speed ratio, and the output of the resolver 202 is converted into a unit grid value and processed together with the output of the encoder 110 to detect a high-precision absolute position. Encoder outputs and resolver outputs of the motors AXa, AXb... are outputted through switches SW1 and SW2 and processed by common-use detectors APC and RPC. Therefore, this simple constitution which shares the detecting circuits takes a high-precision measurement of the absolute position of every shaft.
IPC 1-7
IPC 8 full level
G01B 7/00 (2006.01); G01D 3/08 (2006.01); G01D 5/245 (2006.01); G05B 19/39 (2006.01); G05B 19/4062 (2006.01)
CPC (source: EP US)
G01B 7/003 (2013.01 - EP US); G01D 3/08 (2013.01 - EP US); G01D 5/2458 (2013.01 - EP US); G05B 19/39 (2013.01 - EP US); G05B 19/4062 (2013.01 - EP US)
Citation (examination)
US 4085890 A 19780425 - KIMURA TOSHIHIRO, et al
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 0143852 A1 19850612; EP 0143852 A4 19870128; EP 0143852 B1 19900919; DE 3483235 D1 19901025; JP S59188518 A 19841025; US 4575666 A 19860311; WO 8404162 A1 19841025
DOCDB simple family (application)
EP 84901427 A 19840411; DE 3483235 T 19840411; JP 6333383 A 19830411; JP 8400185 W 19840411; US 68804984 A 19841211